Guide assemblage for sliding shuttering for building concrete structures

ABSTRACT

A sliding shuttering arrangement for building concrete structures having slightly sloping and ring-shaped walls in which a shuttering plate is defined by a skin of sheet panels of highgrade steel so arranged as to overlap each other at their side edges, with said panels being prebent against the wall curvature and the sheet panels constituting the skin, in the installed condition, being prestressed.

nited States Inventor Appl. No.

Filed Patented Assignee Priority Gunter Rohlt Dusseldorf, Germany Feb.2, 1970 Jan. 4, 1972 Gleitschnellbau Gesellschaft mit BeschrankterI-Iaftung Dusseldorf, Germany Apr. 10, 1965 Germany Continuation-impartof application Ser. No. 473,773, July 25, 1965, now abandoned Originalapplication Aug. 7, 1968, Ser. No. 750,897, now Patent No. 3,521,336.Divided and this application Feb. 2, 1970, Ser. No. 12,496

GUIDE ASSEMBLAGE FOR SLIDING SHUTTERING FOR BUILDING CONCRETE STRUCTURES2 Claims, 13 Drawing Figs.

US. Cl

[51] Int. Cl E04g 9/00 [50] Field ofSearch 25/131 SA, 131 SB, DIG. 6;249/17, 19, 20, 21, 22,189,192, 194

[56] References Cited UNITED STATES PATENTS 1,030,480 6/1912 Packard25/016. 26 1,891,160 12/1932 Jespersen 249/17 X Primary ExaminerJ.Spencer Overholser Assistant Examiner-De Walden W. Jones Attorney-Holman& Stern ABSTRACT: A sliding shuttering arrangement for building concretestructures having slightly sloping and ring-shaped walls in which ashuttering plate is defined by a skin of sheet panels of high-gradesteel so arranged as to overlap each other at their side edges, withsaid panels being prebent against the wall curvature and the sheetpanels constituting the skin, in the installed condition, beingprestressed.

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INVENTOR har [Q6 H'- F ATTORNEY$ Pmmwm m 316321079 SHEET 7 BF 7 INVENTORGourrg IQaHLF cum :7 M P W) ATTORNEYS GUIDE ASSEMBLAGE FOR SLIDINGSHUTTERING FOR BUILDING CONCRETE STRUCTURES This application is acontinuation-in-part of my copending application, Ser. No. 473,773,filed July 25, 1965, and entitled Guiding Means For Slidable Shutteringnow abandoned and is a division of application Ser. No. 750,897 filedAug. 7, 1968 now U.S. Pat. No. 3,521,336.

The present invention relates to sliding framework for buildingstructures of the type in which guide members for shuttering plates arearranged to be horizontally displaceable on the margin of a horizontallysupported grid with the guide members including parallel orsubstantially parallel limbs or uprights to the inner facing sides ofwhich the shuttering plates are secured.

The limbs thus engage over an area of the grid in the region ofreinforced concrete located beneath the plates and abut against theconcrete at their lower ends by means of sliders.

Optional means can be utilized for guiding the slidable framework forpermitting the plates to be quickly displaced relative to each other foradjusting the apparatus not only to various wall thicknesses but also toobtain continuously decreasing or increasing wall thicknesses. Moreover,such means allow the adaptation of the concrete wall to rapidly andelastically determine stresses as a result of which not only is thehandling of the framework facilitated but an improvement is effected inthe economical dimensioning of the constructron.

Generally, the invention includes at least one of the limbs or uprightsof the guide members being adjustably constructed and in an preferredembodiment, this is accomplished by arranging one of the limbs to bedisplaceably disposed between pairs of transverse girders and at leasttwo adjusting devices arranged in the upper and middle portion of thelimb function for displacing the limb between the guides. By virtue ofthe use of at least two displacement devices, the displaceable limb canbe moved not only parallel to the other limb but can be adjusted insubstantially any desired oblique position. The stability of the guidingdevices for the plates can optionally be maintained during theconstructional procedure by providing one of the limbs with atruss-stiffening arrangement for insuring linearity in the displacementof the shuttering plates.

A further important aspect of the invention is that the radial girdersof the horizontal grid on the outer ends of which the guide for theslidable shuttering plates is suspended, is connected by a centersupport and tension members. By reason of this stiffening aspect whichis realized with a slight outlay of material the stability andresistance of the grid to deformation is increased which means that theguiding of the shuttering plates is even more accurate.

A further important feature of the invention is that the skin of theshuttering plates consists of laminated panels of high grade steel whichare present against the wall curvature and with the panels in theinstalled condition being prestressed as well as the panels beingprovided with books opening downwardly and tube elements on which thepanels may be suspended by the hooks and which tube elements arelaterally displaceable. Upon concreting and particularly upon theramming of fresh concrete, no grout can be forced out at the overlappingjoints of the separate panels and due to the pretensioning, thecurvature of the skin defined by the panels is quite even.

Still another important aspect of the invention is that it is possiblewith the same guide framework to suspend optionally shuttering plates ofvarious thicknesses which becomes necessary when concrete walls of greatthickness are to be concreted as their horizontal shear effect becomesat times considerably greater with increasing thickness.

Further objects and advantages of the invention will become more readilyapparent from the following detailed description and annexed drawingsand in which drawings:

FIG. 1 is a side elevational view of a guide assemblage in which a partof the already finished concrete wall is illustrated in cross section;

FIG. 2 is a plan view of the horizontally arranged grid defined by asegment of a sector,

FIG. 3 is a front elevational view of a shuttering plate illustratinggenerally the position of a perpendicular stiffening girder providedwith hooks and horizontal tube girders,

FIG. 3a is a view generally similar to FIG. 3 illustrating the manner inwhich the panels are pushed laterally over one another.

FIG. 4 is a view taken along the line IV-IV of FIG. 3,

FIG. 5 is a view taken along the line V-V of FIG. 3,

FIG. 6 is a view in horizontal section taken through a shuttering plateprovided with stiffeners and hooks,

FIG. 6a is a view generally similar to FIG. 6 illustrating the surfacesof the panels which are pushed over one another,

FIG. 7 is a horizontal part sectional view taken through a prebentpanel,

FIG. 8 is a view taken along VIIIVIII of FIG. 6,

FIG. 9 is a side view of the adjusting means for the limb, the viewbeing on an enlarged scale,

FIG. 10 is a side view of a variation of the arrangement illustrated inFIG. 9,

FIG. 11 is a view taken along line IXA-IXB of FIG. 9, with a view of thepart of the device in FIG. 9 located to the left of the section line,

FIG. 12 is a view taken along line IXC-IXD of FIG. 9 in the direction ofviewing in FIG. 11, and

FIG. 13 is a view taken along XX of FIG. 10 with a view of the partlocated to the left of the section line.

While hydraulic lifting appliances are employed with the assemblage forguiding a slidable shuttering plate illustrated in FIG. 1, it is ofcourse possible to replace such hydraulic appliances with mechanicallyoperated appliances. The assemblage as an entity is supported upon aferroconcrete unit 20 cast in local shuttering and which in thisembodiment should be approximately 1.50 m. in height. As an alternative,the shuttering plate can be mounted directly on the base or a basetypesubstructure in such a manner that rollers rest on the concrete. Theinterstices between the upper edge of the base and the under edge of theshuttering plates can be bridged temporarily, that is to say, for theperiod of the beginning of the concreting operation, with an ordinarystay shuttering of iron plates, and the plates are removed as soon asthe slidable shuttering has reached 1 or 2 meters in height and therollers have run thereover.

As illustrated in FIG. 1, a guide assemblage G for shuttering plates 12cand 12d is defined by limbs or uprights la and lb. It will be seen thatat approximately the midpoint of the limbs, a transverse girder 8connects the limbs so as to be reciprocably displaceable. Transversegirders 2a and 2b are disposed between the limbs la and 1b at the topthereof for allowing a relative displacement of the limbs. The distancebetween the limbs 1a and lb and their position relative to each other isascertained from the thickness of the concrete wall to be produced andoptionally from the decrease or increase in the wall thickness. Thegirder 8 serves as a yoke which is fixedly connected with a lifting unit9 adapted to be supplied with oil under pressure and which lifting unitis Rollers at the upper part of a jack rod 21. The entire guidingassemblage is held at a grid in which single girders 10a and 10b extendin a radial direction. The radial girders 10a and 10b are connected by acenter support 27 and tension rods 28. It will be noted that the limb 1ais stiffened by a truss arrangement including rods 6a-6e and the rod 6acan support an external working platform. In lieu of this particulartruss arrangement a solid wall construction may be employed either inwhole or in part. At the lower end of the other limb lb a trussarrangement 7a-7c is provided and which serves to support a workingplatform. Rollers 4a and 4b are carried by the lower ends of the limbsla and lb respectively and these rollers are adjustable to a definitethickness of the unit 20 by manipulation of setscrews 5.

FIG. 2 illustrates in detail the structural features of the horizontalgrid and the radially arranged girders 10a and 10b are stiffened bytransverse girders and terminate at the center support 27 (See FIG. 1).

The plates 12d and 120 illustrated in FIG. 1 are stiffened by verticalgirders 31 having hooks 29 as perhaps more clearly illustrated in FIGS.7 and 8. The plates are suspended on precurved horizontal tube elementsor sections 30 by means of the hooks 29 and which elements are insertedthrough perpendicularly arranged girders 13a and 13b (FIGS. 3 and 6).The girders 13a and 13b are attached to the limbs 1a and lb.

The skin of the shuttering plate includes sheet panels arranged inlaminated form and which are substantially greater in height than inwidth so that high rectangular areas occur. The panels are, in eachsituation, stiffened by two welded tubular elements 31 (FIG. 6) and thepanels overlap each other at their free side edges so that the panelsare laterally displaceable on the elements 30. Since the same aresuspended by means of the hooks 29, they can also be pushed upwardly andinwardly and removed during the concreting operation. In order to enablethe separate panels to fully fit the curvature of the concrete wall, thepanels are manufactured of high-grade steel and prebent to conform tothe wall curvature. By this construction, the entire skin of theshuttering plates in the finished assembled state is resilientlytensioned whereby (FIG. 7), during the concreting operation, andparticularly during the ramming of the fresh concrete no grout can beforced out at the overlapping locations of the separate panels.

It is believed that FIGS. 3a and 6a clearly illustrate the arrangementof the panels which are pushed laterally over one another and whichconstitute the casing in the surfaces of the shuttering plates which arepushed over one another.

FIG. 9 illustrates the details of the means serving for the displacementof the limb 1b relative to the limb 1a. A shaft 26 is inserted throughan opening in a counterbearing 27 disposed on the radial girder a. Byturning an adjusting nut 28 the relative position of the girder 10a andthe limbs la and 1b in common with the transverse girders 2a and 2b canbe changed. In order to reduce friction, transversely disposed roundiron bars are welded onto the girders 2a and 2b for reducing thefriction between the girders 2a and 2b and the radial girders 10a and10b. When this adjustment occurs, the limbs la and lb can execute apivotal movement about the rollers 4a and 4b. The limb 1a isdisplaceably carried between the transverse girders 2a, 2b and 8 inorder that the limb lb can additionally efiect a radial movement in thedirection of the girder 10a and relative to the limb la.

At the upper end of the limb 1a, the adjustment includes ascrew-threaded bushing 32 which is inserted in the limb lb. A screw rod25 is located in the bushing 32 and is inserted on the right sidethereof through an end bearing 25a attached to the right-hand end of thetransverse girder 2a. By turning head 33 provided on the rod 25, therelative position of the limb la and the limb 1b can be changed.

A second adjustment means is located on the transverse girder 8 andincludes a screw-threaded bushing 32 inserted in the limb Ib and a screwrod 25 is inserted through the bushing 32. At the right-hand end, thescrew rod 25 is inserted through an end bearing 25a attached to thetransverse girder 8. The adjustment is effected in the manner as abovementioned by turning head 33 on the end of rod 25. In order to clearlydefine the action, the adjusted limb lb is shown on the left in dotdashlines. By reason of the above adjustment means it is not only possibleto change the position of the limbs 1a and lb in common relative to theradial girder 100 but to adjust the limb lb with respect to the limb 1aand selectively either parallel to the limb 1a or by a pivotaladjustment with the rod heads adjusted upwardly and downwardly to adiffering degree.

In FIG. 10 there is disclosed a variation of the adjusting means inwhich a horizontally operable oil pressure piston cylinder unit 40 ismounted on the radial girder 10a by means of a suitable support 35detachably connected to the girder by screws or the like 51. Horizontalpiston rod 41 of the piston cylinder unit 40 engages the end of thetransverse girder 2a beneath the end bearing 25a by means of a link 42.By virtue of this particular arrangement, the entire yoke constructioncan be moved to and fro via control of the oil pressure in the radialdirection in relation to the axis of symmetry of the structure therebygreatly facilitating the adjustment. By virtue of member 50 on thepiston rod 41, the relative position of the radial girder 10a and limbsla and 1b in common with the girders 2a and 2b can be altered.

In this embodiment, adjustable slide skids 46 and 47 are positioned onthe transverse girders 2a and 2b. The upper skid 46 can be adjusted bymeans of a screw 43 and skid 47 is pivotally connected at 45 andadjustable at the other side by screws 44. The adjusting screws 43 and44 are each inserted through a screw-threaded element 49 welded to thehorizontal flange of the transverse girders 2a and 2b. To reducefriction between the radial girders 10a and 10b and the skids 46 and 47,transversely arranged round iron pieces 48 are welded between the skids.This arrangement is particularly efficacious in those situations inwhich the wall of the structure does not narrow continuously but followsany curve desired. The adjustable skids 46 and 47 permit the adaptingand guiding of the radial girders 10a and 10b to follow the changinginclination or adapting the radial girders precisely to the changinginclination of the limbs la and 1b. For example, it would be possible tocontrol in common the oil pressure for the piston cylinder unit 40centrally as a function of a prescribed curved incline of the structure.Manifestly, the adjustment becomes even more precise and the servicingis facilitated substantially.

FIG. 11 indicates the position of the various girders with respect tothe limb 1!). It will be noted that on both sides of the limb 117 thereis provided a radial girder 10a which, in this embodiment, is of aU-shaped profile. Above the radial girders 1a can be seen thetransversely disposed round iron bars 24 and above and underneath thebars 24 the transverse girders 2a and 2b. Lastly, angle irons 24a arepositioned at the lower end. In the upper part can be seen the rod 25which is inserted through the end bearing 25a and an elongated slot inthe end bearing 25a permits a vertical adjustment.

In FIG. 12 is illustrated the arrangement of the profiles in relation tothe limb 1b and it will be noted that the screwthreaded bushing 32 isinstalled in the limb lb which guides the rod 25. On both sides of thelimb 1b, the transverse girder 8 is positioned and above and below thegirder 8 the angle irons 24a.

FIG. 13 shows that the radial girders 10a are disposed on both sides ofthe limb 1b and the upper adjustment screws 43 and the lower adjustmentscrews 44 are clearly discemable. The piston rod 41 which engages thelink 42 and the upper and lower skids 46 and 47 are clearly visible.

This invention is not to be confined to any strict conformity to theshowings in the drawings but changes or modifications may be madetherein so long as such changes or modifications mark no materialdeparture from the spirit and scope of the appended claims.

What I claim is:

1. In a sliding shuttering plate arrangement for building concretestructures and particularly structures having slightly sloping andring-shaped walls, a shuttering plate including a skin defined by sheetpanels of high-grade steel and stiffening elements, said panels beingarranged to overlap each other at their side edges, said panels beingprebent to conform to the wall curvature and, in the installedcondition, being prestressed, and precurved elements on which saidstiffening elements are displaceably supported.

2. The sliding shuttering arrangement as claimed in claim 1 in which thepanels are provided with hooks opening downwardly and precurved elementsbeing tube elements on which the panels may be suspended by the hooksand said panels being laterally displaceable on the tube elements.

1. In a sliding shuttering plate arrangement for building concretestructures and particularly structures having slightly sloping andring-shaped walls, a shuttering plate including a skin defined by sheetpanels of high-grade steel and stiffening elements, said panels beingarranged to overlap each other at their side edges, said panels beingprebent to conform to the wall curvature and, in the installedcondition, being prestressed, and precurved elements on which saidstiffening elements are displaceably supported.
 2. The slidingshuttering arrangement as claimed in claim 1 in which the panels areprovided with hooks opening downwardly and pre-curved elements beingtube elements on which the panels may be suspended by the hooks and saidpanels being laterally displaceable on the tube elements.